Who Should Consider Lung Cancer Screening?

Lung cancer is often called a “silent disease” because it may not cause symptoms until it has advanced. That’s why screening can be so important for people at increased risk. A low-dose CT (LDCT) scan can detect lung abnormalities early, when treatment options are often most effective.

What Is Lung Cancer Screening?

Lung cancer screening uses a low-dose CT scan to create detailed images of the lungs while exposing patients to significantly less radiation than a standard CT exam. The goal is to identify lung cancer at an early stage before symptoms develop and before the disease has spread.

Screening is intended for people who feel well but have risk factors that place them at a higher likelihood of developing lung cancer.

Who Is Eligible for Lung Cancer Screening?

According to current Medicare guidelines, you may qualify for annual lung cancer screening if you:

Are between the ages of 50 and 77 and Have a smoking history of at least 20 pack-years, and Currently smoke or have quit within the past 15 years, and Do not have signs or symptoms of lung cancer.

A pack-year is calculated by multiplying the number of packs smoked per day by the number of years smoked. For example, smoking one pack per day for 20 years equals 20 pack-years.

Other factors may also increase risk, including:

• Family history of lung cancer
• Radon exposure
• Exposure to asbestos
• Prolonged secondhand smoke exposure

Talk with your healthcare provider about your personal risk factors to determine whether screening is appropriate.

How Often Should Screening Be Performed?

For individuals who meet screening criteria, annual low-dose CT scans are typically recommended. Comparing scans from year to year allows radiologists and physicians to identify changes that may require further evaluation.

If you’re experiencing symptoms, your provider may recommend diagnostic imaging rather than routine screening.

What If You Quit Smoking?

Former smokers may still benefit from screening. If you quit within the past 15 years and have a smoking history of at least 20 pack-years, you may still qualify for annual screening. While lung cancer risk decreases after quitting, it remains elevated for years compared with someone who never smoked.

Can Non-Smokers Develop Lung Cancer?

Yes. Although smoking is the leading risk factor, lung cancer can occur in people who have never smoked. Individuals with a strong family history of lung cancer or significant exposure to environmental risk factors may still be at increased risk.

If you have concerns about your risk, speak with your healthcare provider about the most appropriate imaging evaluation for your situation.

Symptoms That Should Prompt a Conversation With Your Doctor

While lung cancer screening is designed for people without symptoms, you should contact your healthcare provider if you experience:

• A persistent cough
• Chest discomfort or pain
• Shortness of breath
• Coughing up blood
• Unexplained weight loss

These symptoms do not necessarily mean you have lung cancer, but they should be evaluated by a medical professional.

Why Is Low-Dose CT Recommended?

Low-dose CT is the preferred screening tool for people at high risk because it can detect very small lung nodules that may not be visible on a standard chest X-ray. It combines detailed imaging with lower radiation exposure, making it suitable for annual screening.

What Happens If a Nodule Is Found?

Finding a lung nodule does not automatically mean cancer. In fact, most nodules found during screening are benign. A radiologist will evaluate the finding and assign a Lung-RADS score, which helps determine whether additional imaging or follow-up is needed.

In many cases, the next step is simply a follow-up scan to monitor the area and confirm there are no concerning changes.

Does Screening Prevent Lung Cancer?

Screening does not prevent lung cancer from developing. However, it can identify lung cancer earlier, when treatment is often more successful and outcomes may be improved. For people who smoke, quitting remains the most effective way to reduce lung cancer risk.

Understanding the Limitations of Screening

One potential drawback of screening is the possibility of a false-positive result, meaning a finding appears suspicious but is ultimately determined to be noncancerous. Lung nodules are relatively common, and the vast majority are benign. Still, follow-up testing may be recommended to ensure your safety and peace of mind.

Schedule a Lung Cancer Screening With Radiology Ltd.

If you’re at high risk for lung cancer, a low-dose CT scan may help detect disease earlier, before symptoms develop. Talk with your healthcare provider to determine whether lung cancer screening is right for you and whether you meet current screening guidelines. Early detection can make a meaningful difference.